| 精密铸造基本概念 |
| 添加时间：2019/8/3 17:08:16 浏览次数： |
| 它包括：熔模铸造、陶瓷型铸造、金属型铸造、压力铸造、消失模铸造。 It includes investment casting, ceramic casting, metal casting, pressure casting and lost foam casting. 其中较为常用的是熔模铸造,也称失蜡铸造：选用适宜的熔模材料(如石蜡)制造熔模；在熔模上重复沾耐火涂料与撒耐火砂工序，硬化型壳及干燥；再将内部的熔模溶化掉，获得型腔；焙烧型壳以获得足够的强度，及烧掉残余的熔模材料，；浇注所需要的金属材料；凝固冷却,脱壳后清砂，从而获得高精度的成品。根据产品需要或进行热处理与冷加工和表面处理。 Among them, investment casting is more commonly used, also known as wax-loss casting: the appropriate investment casting materials (such as paraffin) are selected to make the investment casting; refractory coatings and spraying refractory sand process are repeated on the investment casting, hardening the shell and drying; then melting the internal investment mould to obtain the cavity; calcining the shell to obtain sufficient strength, and burning the residual. Mold materials, metal materials needed for pouring, solidification and cooling, sand removal after shelling, so as to obtain high-precision products. According to product requirements or heat treatment and cold processing and surface treatment. |
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